Sienna Miller has invited on-again love Jude Law to join her in Barbados to celebrate their birthdays. The two, who rekindled their romance while starring in rival Broadway productions, are now working on another reunion in the Caribbean. Sources tell Page Six: “Its Sienna’s birthday on Monday and Jude’s the following day, so she has invited him to join her to celebrate. Jude is keen to spend some of the holidays with his kids, but it’s a tempting offer. Sienna has always maintained she and Jude are soulmates despite their past troubles.”